compare
Buildbot vs Concourse
The same facts for both, read from GitHub every night, and the relation a person reviewed.
| Fact | Buildbot | Concourse |
|---|---|---|
| Language | Python | Go |
| Licence | GPL-2.0 | Apache-2.0 |
| Stars | 5.5k | 7.9k |
| Latest | v4.3.0 | v8.3.1 |
| Last push | 2026-09-28 | 2026-10-06 |
| Release cadence | about 45 days between releases | about 33 days between releases |
| Active contributors | 7 commit authors on the default branch in the last 90 days | 19 commit authors on the default branch in the last 90 days |
| Flags | none | none |
How they relate
Both replace Jenkins. Alternatives to Jenkins →
Full replacementBuildbotBuild pipelines configured in Python, with distributed workers.
Full replacementConcoursePipelines declared as resources and jobs, every step in a container.
Buildbot
Concourse
- v8.3.12026-09-28worker: keep in-flight overlay dirs during orphan sweep by @ShravanthReddy in #9695
- v8.3.02026-08-13Chown bind-mount volumes when running as non-root user
- v8.2.52026-08-03[Security] Fix path traversal bug during secrets lookup. Resolves GHSA
- v8.2.42026-06-16fix how resources with check_every: never are handled when scheduling builds
- v8.2.32026-05-27unescape the redirect uri before further parsing it
Buildbot
✓ signed The latest release, v4.3.0, carries a signature GitHub verified.
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Concourse
✓ signed The latest release, v8.3.1, carries a signature GitHub verified.
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